Question

1. Four groups of rats are first massed and then fed identical diets except for the amount of vitamin A they receive. Each group gets a different amount of vitamin A. After 3 weeks on the diet, the rats’ masses are measured again to see if there has been a decrease.

What is the dependent variable?

a) vitamin A
b) rats
c) mass
d) diet

Answer 1

C. Mass is the dependent variable.

Answer 2

(C) mass is the right answer